55205022643401 has 32 divisors (see below), whose sum is σ = 73839409602048. Its totient is φ = 36687240423680.

The previous prime is 55205022643339. The next prime is 55205022643429. The reversal of 55205022643401 is 10434622050255.

It is a cyclic number.

It is not a de Polignac number, because 55205022643401 - 2¹⁹ = 55205022119113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55205022643401.

It is not an unprimeable number, because it can be changed into a prime (55205022643471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2695152706 + ... + 2695173188.

It is an arithmetic number, because the mean of its divisors is an integer number (2307481550064).

Almost surely, 2^{55205022643401} is an apocalyptic number.

It is an amenable number.

55205022643401 is a deficient number, since it is larger than the sum of its proper divisors (18634386958647).

55205022643401 is a wasteful number, since it uses less digits than its factorization.

55205022643401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23381.

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 55205022643401 its reverse (10434622050255), we get a palindrome (65639644693656).

The spelling of 55205022643401 in words is "fifty-five trillion, two hundred five billion, twenty-two million, six hundred forty-three thousand, four hundred one".